Method of making pencil or crayon cases



(No'ModeL) Y I 4 Sheets-Sheet 1.

B. WEISSENBORN.

I v METHOD OF MAKING PENCIL 0R URAYON GASES.

N0. 515,034. Patented Feb. 20, 189 1.

WITNESSES.

z w wg iw 4 Sheets-Sheet '2.

(No Model.)

B. WEISSENBORN. METHOD 0]? MAKINGPENGIL 0R GRAYON GASES.

No. 515,034. Patented eb. 20, 1894.

WITNESSES.-

(No Model.) '4 Sheets-Sheet 3.

B. WEISSENBORN. METHOD OF MAKING-PENCIL 0R 'ORAZY'ON GASES.

N0. 515,034. Pate'n tedFebQ 20,1394.

A PH p R, Q

WITNESSES: INVENTOR THE NATONLL mmmmmmmmmmmmmm Y nnnnnnnnnnnn c.

(No Model.) 4 Sheets-Sheet 4.

WEISSENBORN. METHOD OF MAKING PENGIL 0R GRAYON GASES.

No. 515,034. Patented Feb. 20, 1894.

WITNESSES. INVENTOI? A 7'TOHNEY.

JERSEY CITY, NEW'JERSEY.

EDWARD WEISSENBORN, OF

METHOD OF MAKING PENCIL OR CRAYON CASES.

SPECIFICATION forming part of Letters Patent No. 515,034, dated February20, 1894.

Application filed October 2,1890. Renewed July 21, 1893. Serial No.481,138. (No specimens.)

To all whom it may concern.-

Be it known that I, EDWARD Wnrssnnnonn,

a citizen of the United States, residing at Jersey City, in the countyof Hudson and State of New Jersey, have invented a new and usefulImprovement in Methods of Making Pencil or Crayon Cases, of which thefollowing, taken in connection with the accompanying drawings, is afull, clear, and accurate description.

The object of my invention is to overcome the many and expensivemanipulations required in the manufacture of ordinary lead pencils orcrayon cases, of wood; and to this end it consists in molding thedesired cases from a plastic composition, usually of saw dust of anyfancied Wood, a fibrous material as wood pulp or paper pulp, and abinding material for holding the ingredients together, as hereinaftermore fully described.

The binding material which I employ is composed of one or more of thefollowing: plaster of paris, ch alk, china clay, resin or pitch, starch,glue; and the several ingredients of my composition are mixed inproportions suited to the different grades of hardness of lead or crayonwhich is to be inserted in the completed case, Ihaving found that byvarying the proportions Iobtain a case graded to the lead or crayontherein, in such manner that in sharpening the pencil or crayon, the

case and lead can be cut with greater ease and less liability ofbreakage of the lead or crayon than in the cases now in use.

In making pencil cases for the average grade of leads, I use in mycomposition about the following'proportions: sawdust, one part;wood-pulp or paper-pulp, one and one-half parts, and the bindingmaterial consisting of plaster of paris, chalk, or china clay, sevenparts; rye flour four and one-half parts; wax one and one-half parts;alum, one-quarter parts; Venetian turpentine, one part; rosin or pitch,one-half of a part; starch, one part; glue, one-eighth of a part; butthese proportions can be varied to suit the grade of lead or crayon; theharder the grade of lead or crayon, the larger proportion of sawdust andwood or paper-pulp will be used. Any other binding material or materialswhich will hold the wood or paper-pulp and sawdust firmly together andallow it to be molded or pressed into the required shape, may besubstituted for the above-mentioned binding material. This compositionis thoroughly mixed in any suitable vessel and is then ready to beformed into cases.

In the accompanying drawings I have illustrated a machine adapted to beused in carrying out my invention.

Figure I, represents a partial vertical section and partial side view ofthe machine; Fig. II, a plan view of a portion of the cylinder; Fig.III, an end view of the pencil case forming die; Fig. IV, a longitudinalsection of the forming die on the line '22, c, Fig. 3; Fig. V, a likesection thereof on theline x, 00; Fig. VI, a vertical cross section ofthe machine on the line y, y, Fig. I; Fig. VII, a like section of aportion thereof on the line o, c, Fig. I; Fig. VIII, a top view of aportion of the machine. Fig. IX represents'a perspective View partly insection of a lead pencil embodying my invention.

Similar letters of reference refer to similar parts in the variousfigures.

In now describing the method and opera-- tion of making my improvedpencil cases, I will also describe the machine, its various parts andhow they co-act.

The above-described composition, being taken from the mixer, is placedin the cylinder A, which rests upon the bed-plate O of the machine, overan opening therein; and in the base plate 0 of which are perforations D,tapering upwardly. A plunger B, fits tightly into the cylinderA, andbeing pressed downward forces the mixture through the perforations inthe plate 0, into a proper receptacle placed under the machinebed-plate, thus rendering the mixture more homogeneous and expelling theair therefrom. This operation may be repeated two or three times.

The cylinder A, is provided at one side, as at A, With a conicalopening, which, during the pressing of the mixture above-described, isclosed by a tightly fitting conical plug. ter the mixture has beenforced through the cylinder A, two or three times or sufficiently tomake the mass homogeneous, the base plate 0, is removed a solid platetightly fitting, is substituted therefore, and a former die E, issubstituted for the solid plug in the conical opening A; or the cylinderA, may be made in the first instance with the perforated bottom C andwith continuous or solid sides, and, after the mass has becomehomogeneous bypressure through the same, another cylinder like thecylinder A, but with a solid bottom, and the conical opening A, at itsside, may be substituted in its place.

The former die E, is made in conical outer form, and to fit closely intothe conical opening A, of the cylinder A. The inner portion E of itsinterior is formed so as to produce a conical opening of more acute formthan its outer sides, while the outer portion G, or that part toward theouter part of the cylinder A, is formed into a cylindrical opening, thesize ora trifle larger in diameter than the pencil case to be formed. Inthe centerof the opening of the former die E, is a core E, which is heldin position by wings or supports E and conical in that portion of thedie where the die is of conical form, and cylindrical Where the die isof cylindrical form, the conical portion of the core gradually taperingto where it meets the cylindrical portion of the core; said cylindricalportion of the core being a little larger than the size of the lead orcrayon to be inserted in the case.

Attached to the bed-plate O, and in close proximity to the cylinder A,are trays or supports P, P, P These supports have in them the slots 19,19, 19 by means of which and of the screws S, S, S they can be adjustedupon the bed-plate. To the supports P, P are affixed the hangers N, N,in which are mounted the shafts H, M; the shaft M, is provided at itsouter end with the graduated speed pulley M, by means of which motion iscommunicated from any suitable source or power, and the motion of theshaft M,

A is communicated by the gear wheels K-L,

mounted upon said shaft and K, to the shaft H. At the inner end of theshaft H is secured the crank piece R, and screwed to the crank piece R,as at r, is the knife T. Mounted upon the shaft H, are the delivery armsI, I, in such manner that they follow closely the revolution of theknife T. The former die E, being placed in the cylinder A, and themixture placed therein, and pressure being applied to the plunger B, themass is forced through the former die E, emerging in the shape of amolded pencil case of continuous length, having a hole thereincorresponding with the lead to be inserted. This continuous case 'isreceived upon the supports P, P, P and as soon as a part equal to thelength of a .pencil case has passed through the former part or sectionof the size of a pencil case over the support P, P and down the inclineor chute P attached thereto, and as the mass or mixture in the cylinderis forced through the former die, the knife T, in its revolution cutsoff successive pencil case lengths which are pushed down by the arms I,I, into the chute P The knife T, can be adjusted so as to press firmlyagainst the outer end of the former die by shifting the supports P,P andtheir hangers N,N, by means of the slots and screws before mentioned.The knife T, is prevented from springing outward by a part of thesupport P, which also serves as a guard or guide to hold the pencil caseupon the supports P, P, P it being provided with an arm or projection pThe supports P, P may also be provided with the stops 19 to hold thepencil case at the top thereof, until removed by the delivery arms.

After a sufficient number of the pencil cases have been formed anddeposited in the chute P, I insert the leads or crayons as follows: Idip about one-half dozen of leads of crayons half their length in glueor other adhesive substance and insert them in the cases. I then dip theother half of the leads or crayons in the glue and force them theirentire length in the cases. The cases with their leads are then placedin dies of circular, hexagona'l or any desired form and subjected topressure and until they are perfectly dry, when they are polished andfinished in the ordinary manner.

Any desired coloring matter may be added to the mixture to give thecompleted case a desired color.

I do not claim in this application the machine herein described butreserve the right to embody the same in aseparate application forLetters Patent.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In the manufacture of lead pencils, the herein described method ofmolding'orpressing from a plastic composition a continuous pencil case,then cutting said case into sections of properlengtl1,and then insertingthe pencil leads or crayons in said case-sections, substantially asherein described.

2. In the manufacture of lead pencils, the herein described method ofmolding or pressing from a plastic composition a continuous pencil case,then cutting said case into sections of proper length, then insertingthe pencil leads or crayons in said case sections, and

finally subjecting the latter to the action of shaping dies,substantially as herein described.

In witness whereof I have hereunto set my hand this 27th day ofSeptember, 1890.

EDWARD WEISSENBORN. In presence of R. THEO. BOSKEROK, LoUIs W. FROST.

